Question: What is the  musical composition for composer of  Pyotr Ilyich Tchaikovsky
SPARQL (Wikidata):  select distinct ?sbj where { ?sbj wdt:P86 wd:Q7315 . ?sbj wdt:P31 wd:Q207628 } 
Answer: Scherzo à la russe, Dance of the Sugar Plum Fairy, All-Night Vigil, Six Romances, Opus 38, Hamlet, Etude, Chanson triste, Mazurka, Marche funèbre, Mazurka, Chant sans paroles, Au village, Valse, Valse, Danse russe, Scherzo, Rêverie interrompue, Violin Concerto, Capriccio italien, Souvenir de Florence, Romeo and Juliet, Variations on a Rococo Theme, Orchestral Suite No. 4 ''Mozartiana'', The Storm, The Tempest, Pezzo capriccioso, Romance in F minor, The Snow Maiden, Souvenir de Hapsal, Souvenir d’un lieu cher, Op. 42, Orchestral Suite No. 1, Orchestral Suite No. 3, Orchestral Suite No. 2, Valse-Scherzo, Cello Concerto, Festival Coronation March, Liturgy of St. John Chrysostom, Moscow